The shape of dark matter haloes: results from weak lensing in the Ultraviolet Near-Infrared Optical Northern Survey (UNIONS)
ArXiv 2209.09088 (2022)
Constraining the physics of star formation from CIB-cosmic shear cross-correlations
(2022)
Optical characterization of OMT-coupled TES bolometers for LiteBIRD
Journal of Low Temperature Physics Springer Nature 209:3-4 (2022) 396-408
Abstract:
Feedhorn- and orthomode transducer- (OMT) coupled transition edge sensor (TES) bolometers have been designed and micro-fabricated to meet the optical specifications of the LiteBIRD high frequency telescope (HFT) focal plane. We discuss the design and optical characterization of two LiteBIRD HFT detector types: dual-polarization, dual-frequency-band pixels with 195/280 GHz and 235/337 GHz band centers. Results show well-matched passbands between orthogonal polarization channels and frequency centers within 3% of the design values. The optical efficiency of each frequency channel is conservatively reported to be within the range 0.64 - 0.72, determined from the response to a cryogenic, temperature-controlled thermal source. These values are in good agreement with expectations and either exceed or are within 10% of the values used in the LiteBIRD sensitivity forecast. Lastly, we report a measurement of loss in Nb/SiNx/Nb microstrip at 100 mK and over the frequency range 200–350 GHz, which is comparable to values previously reported in the literature.KiDS and Euclid: Cosmological implications of a pseudo angular power spectrum analysis of KiDS-1000 cosmic shear tomography⋆
Astronomy & Astrophysics EDP Sciences 665 (2022) a56
Impact of the effective thickness from anti-reflective sub-wavelength structures in achromatic half-wave plate design
Proceedings of SPIE--the International Society for Optical Engineering SPIE, the international society for optics and photonics 12190 (2022) 121902k-121902k-10